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Can a jumping application encrypt data with a public key, and not decrypt it until it arrives at a safe host?

April 26, 2017application arrives Data decrypt encrypt host jumping key public safe

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Can a jumping application encrypt data with a public key, and not decrypt it until it arrives at a safe host?

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Yes. With this arrangement, the encrypted data would be unavailable to the jumping application until it reaches the safe host, which would have the private key. This is provided with the Java Cryptography Engine (JCE) in Java 1.2 and later.